After graduating from İstanbul High school (İstanbul Erkek Lisesi), Gökhan Erün earned his undergraduate degree from İstanbul Technical University - Department of Electronics and Communications and graduate degree from Yeditepe University - Business Administration. Erün began his career at Garanti Bank Treasury Department in 1994. Between 1999-2004, Erün served as the Senior Vice President of Commercial Marketing and Sales Department. After becoming the CEO of Garanti Pension and Life in 2004, he was appointed as Executive Vice President of Garanti Bank in September 2005. Erün began to serve as the Deputy CEO of Garanti Bank in September 2015, also in charge of Corporate Banking, Treasury, Treasury Marketing and Financial Solutions, Derivatives, Cash Management and Transaction Banking, and Financial Institutions. At the same time, he was Board Chairman and Board Member in various local and international subsidiaries of Garanti Bank. As of January 2018, Erün has continued his career in Yapı Kredi as Executive Director in Board of Directors and Chief Executive Officer (CEO). In addition, Erün is the CEO of Koç Financial Services and holds positions in the Boards of various Yapı Kredi Group subsidiaries, Koç Finansman A.Ş. and Allianz Yaşam ve Emeklilik A.Ş. Also as of April 2021, Erün became the President of Koç Holding’s Banking Group.